An 18ct gold sapphire and diamond cluster ring, An 18ct gold sapphire and diamond cluster ring, an oval mixed cut sapphire, approximately 5.40mm x 8.00mm, claw set to the centre of a surround of round brilliant diamonds, all claw set to white wire collets, to solid shoulders and a plain shank, London 1977, 4.06g. Finger size Oº Buying this gemstone ring at auction could save up to 0.42 tonnes of CO2e compared to buying new. Condition Report: Sapphire shows inclusions under 10x magnifications. Some small chips to the girdle of the sapphire. Setting a little dirty. Would benefit from being clean. Surface scratches and marks to the mount.